[ruby-talk:13690] Re: gathering user input

In message <[e-mail]>
[e-mail] writes:

> In [ruby-talk:13674], "Will Conant" <[e-mail]> wrote:
> > Is there a way for me to get a character from the terminal right as it
> > is typed, rather than blocking until the user presses enter? Also,
> > ruby automatically prints the characters out as the user types
> > them... can this  behavior be changed? 
> 
> Though I haven't actually used it in the context of Ruby, this is the sort of 
> thing curses (and thus the curses Ruby extension) does.

Or, you just need echo-less non buffered input, use ruby-termios
module which is now available from CVS.


You can write:

  ruby -rtermios -e 'include Termios; t = getattr($stdin); t.c_lflag \
  &= ~(ICANON~ECHO); setattr($stdin, TCSANOW, t);p $stdin.sysread(1)'

for 1 character input as if you have `stty cbreak -echo'ed.

# Using IO#sysread for avoiding stdio buffering.


Yes, if you have useful stty, `system "stty -echo cbreak"' does ecough
setting up.  Of course you should restore terminal settings until your
program ends.


-- 
[e-mail]                                 April 15, 2001
Never put off till tomorrow what you can do today.